The amount of people having baby’s or the amount of people dying
Rose, shoot system, stem, xylene, tubules cell, meristematic cell
The opposite of photosynthesis is aerobic respiration
The movement of ions across the cell membrane is needed to accomplish repolarization while sodium-potassium pump is used to prepare for depolarization.
The sodium-potassium pump is an active transport system that transports potassium ions into cells and sodium ions out of cells. Using energy from ATP and carrier proteins in the cell membrane, the sodium-potassium pump transports both ions from lower to greater concentration regions. More specific details about the sodium-potassium pump's operation are shown in the Figure. The main ions in both the fluid inside cells and the fluid surrounding them are sodium and potassium, respectively. The resting potential is an electrical gradient that results from these concentration changes across the cell membrane.
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A. because you can't observe an animal in its natural habitat if you take it out of its habitat or if you have a model.